Stability Analysis of TBM Tunnel Undercrossing Existing High-Speed Railway Tunnel: A Case Study from Yangtaishan Tunnel of Shenzhen Metro Line 6

<div>Geological distribution map of undercross section and drilling cores. (a) Geological distribution map of undercross section. ① Completely weathered region. ② Highly weathered region. ③ Moderately weathered region. ④ Week weathered region. (b) Drilling cores of <i>F</i><sub>2</sub> and <i>F</i><sub>2-2</sub> faults.</div>

Advances in Civil Engineering

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Figure 2: Stability Analysis of TBM Tunnel Undercrossing Existing High-Speed Railway Tunnel: A Case Study from Yangtaishan Tunnel of Shenzhen Metro Line 6 

Figure 2 | Stability Analysis of TBM Tunnel Undercrossing Existing High-Speed Railway Tunnel: A Case Study from Yangtaishan Tunnel of Shenzhen Metro Line 6 